:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --bg-hero: #fdf3ea;
  --bg-section: #f5f5f4;
  --card: #ffffff;
  --surface: #ffffff;
  --surface-soft: #fff8f3;
  --border: #e6e2da;
  --text: #14110c;
  --muted: #6b6357;
  --muted-2: #666666;
  --orange: #f97316;
  --orange-dark: #e55a00;
  --orange-text: #ffffff;
  --dark: #1a1a1a;
  --gray: #f5f5f4;
  --input-border: #dddddd;
  --price-bg: #f0f9f0;
  --green: #16a34a;
  --red: #dc2626;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0c0b;
    --bg-hero: #18130c;
    --bg-section: #161513;
    --card: #1c1a16;
    --surface: #1c1a16;
    --surface-soft: #18130c;
    --border: #2b2723;
    --text: #f2ede6;
    --muted: #b3aa9e;
    --muted-2: #9c9488;
    --orange: #ff7a1a;
    --orange-dark: #e96a0d;
    --orange-text: #20120a;
    --gray: #161513;
    --input-border: #3a352f;
    --price-bg: #112419;
    --green: #3fbf7f;
    --red: #e5544c;
  }
}

* { box-sizing: border-box; }
html { padding-top: env(safe-area-inset-top, 0px); padding-bottom: env(safe-area-inset-bottom, 0px); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
}
a { color: inherit; }

/* Header partagé */
header,
header.top {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.topbar,
.header-inner {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: nowrap;
  gap: 14px;
}
.topbar {
  padding: 16px 24px;
  padding-top: calc(16px + env(safe-area-inset-top, 0px));
}

.logo {
  flex: 0 0 auto;
  white-space: nowrap;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: -.3px;
  font-size: 1.1rem;
  color: var(--text);
}
.logo .o,
.logo span { color: var(--orange); }

nav {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  white-space: nowrap;
  min-width: 0;
  gap: 22px;
}
nav a {
  text-decoration: none;
  color: var(--text);
  font-size: .92rem;
  font-weight: 500;
}
nav a.current { color: var(--orange); }

.cta-btn,
.header-inner > .btn {
  flex: 0 0 auto;
  white-space: nowrap;
}
.cta-btn {
  background: var(--orange);
  color: var(--orange-text);
  font-weight: 700;
  padding: 11px 20px;
  border-radius: 8px;
  text-decoration: none;
  font-size: .9rem;
}

@media (max-width: 920px) {
  header nav,
  header.top nav { display: none; }
}

@media (max-width: 520px) {
  .topbar { padding-left: 14px; padding-right: 14px; gap: 10px; }
  .logo { font-size: .98rem; }
  .cta-btn { padding: 9px 11px; font-size: .8rem; }
}

/* Composants partagés — niveau 2 */
#site-header, #site-footer { display: contents; }
.site-header .topbar { min-height: 66px; }
.site-header .avatar {
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--orange);
  color: var(--orange-text);
  font-weight: 800;
  font-size: .84rem;
}
.site-footer {
  margin-top: 60px;
  border-top: 1px solid var(--border);
  padding: 34px 24px;
  color: var(--muted);
  font-size: .84rem;
  background: var(--bg-section);
}
.site-footer .footcols {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(220px, 2fr) repeat(3, minmax(130px, 1fr));
  gap: 32px;
  align-items: start;
}
.site-footer strong {
  display: block;
  margin-bottom: 10px;
  color: var(--text);
}
.site-footer a {
  display: block;
  color: var(--muted);
  text-decoration: none;
  margin-bottom: 7px;
}
.site-footer a:hover { color: var(--orange); }
.site-footer .footer-logo {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--text);
  font-weight: 800;
  font-size: 1rem;
}
.site-footer .footer-logo span { color: var(--orange); }
.site-footer .footer-brand p { margin: 0; max-width: 320px; }

@media (max-width: 760px) {
  .site-footer .footcols { grid-template-columns: 1fr 1fr; }
  .site-footer .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 480px) {
  .site-footer .footcols { grid-template-columns: 1fr; }
  .site-footer .footer-brand { grid-column: auto; }
}

/* --- Header normalization patch --- */
.site-header,
header.top.site-header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.site-header .topbar {
  max-width: 1200px;
  min-height: 72px;
  gap: 18px;
}
.site-header .logo {
  font-size: 1.08rem;
  line-height: 1;
  margin: 0;
}
.site-header nav {
  gap: 18px;
  flex: 1 1 auto;
  justify-content: center;
}
.site-header nav a {
  margin: 0;
  font-size: .92rem;
}
.site-header .cta-btn {
  padding: 12px 18px;
  border-radius: 10px;
  font-size: .9rem;
  box-shadow: 0 8px 20px rgba(249,115,22,.18);
}
.site-header .cta-btn:hover { background: var(--orange-dark); }
@media (max-width: 1100px) {
  .site-header .topbar { padding-left: 18px; padding-right: 18px; }
  .site-header nav { gap: 14px; }
  .site-header nav a { font-size: .88rem; }
  .site-header .cta-btn { padding: 11px 14px; font-size: .84rem; }
}
@media (max-width: 960px) {
  .site-header nav { display: none; }
  .site-header .topbar { min-height: 64px; }
}

/* --- Estimator redesign --- */
.estimator-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(300px, .8fr);
  gap: 28px;
  align-items: start;
}
.estimator-form,
.estimator-side {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 16px 38px rgba(0,0,0,.06);
}
.estimator-form { padding: 34px; }
.estimator-side {
  padding: 24px;
  position: sticky;
  top: 92px;
  overflow: hidden;
}
.estimator-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 24px;
}
.estimator-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: .86rem;
  font-weight: 600;
}
.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.estimator-form .form-group { margin-bottom: 18px; }
.estimator-form input[type="email"],
.estimator-form input[type="number"],
.estimator-form select {
  border-radius: 10px;
  padding: 13px 14px;
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.estimator-form input[type="email"]:focus,
.estimator-form input[type="number"]:focus,
.estimator-form select:focus {
  outline: none;
  border-color: rgba(249,115,22,.65);
  box-shadow: 0 0 0 4px rgba(249,115,22,.14);
}
.option-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 10px;
}
.option-card {
  position: relative;
  display: flex !important;
  align-items: flex-start !important;
  gap: 12px;
  padding: 14px 14px 14px 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg);
  cursor: pointer;
  transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease, background .16s ease;
}
.option-card:hover {
  transform: translateY(-1px);
  border-color: rgba(249,115,22,.55);
  box-shadow: 0 10px 24px rgba(0,0,0,.05);
}
.option-card input { margin-top: 3px; }
.option-card.selected {
  border-color: rgba(249,115,22,.7);
  background: var(--surface-soft);
  box-shadow: 0 12px 28px rgba(249,115,22,.12);
}
.option-title {
  display: block;
  font-weight: 650;
  line-height: 1.3;
  margin-bottom: 3px;
}
.option-meta {
  display: block;
  color: var(--muted);
  font-size: .84rem;
}
.option-price {
  margin-left: auto;
  flex: 0 0 auto;
  padding: 6px 8px;
  border-radius: 999px;
  background: rgba(249,115,22,.12);
  color: var(--orange);
  font-size: .82rem;
  font-weight: 800;
}
.options-simple .option-card { grid-template-columns: 1fr; }
.side-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--orange);
  font-weight: 700;
  font-size: .82rem;
}
.side-title {
  margin: 14px 0 6px;
  font-size: 1.4rem;
  line-height: 1.2;
}
.side-copy {
  margin: 0 0 20px;
  color: var(--muted);
}
.estimate-value {
  margin: 4px 0 8px;
  font-size: clamp(2.2rem, 4vw, 3.1rem);
  line-height: 1;
  font-weight: 850;
  color: var(--green);
}
.estimate-caption {
  color: var(--muted);
  font-size: .92rem;
}
.estimate-progress {
  margin: 18px 0 22px;
}
.estimate-progress .progress-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
  font-size: .88rem;
  color: var(--muted);
}
.progress-track {
  height: 10px;
  border-radius: 999px;
  background: var(--bg-section);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--orange), #f59e0b);
  border-radius: inherit;
  transition: width .25s ease;
}
.side-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 18px 0 20px;
}
.stat-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  background: var(--bg);
}
.stat-card strong {
  display: block;
  font-size: .82rem;
  color: var(--muted);
  margin-bottom: 5px;
}
.stat-card span {
  display: block;
  font-size: 1.08rem;
  font-weight: 750;
}
.breakdown-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: linear-gradient(180deg, var(--surface-soft), var(--surface));
  padding: 18px;
}
.breakdown-card h3 {
  margin: 0 0 12px;
  font-size: 1rem;
}
.breakdown-list {
  display: grid;
  gap: 10px;
}
.breakdown-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: .9rem;
}
.breakdown-row strong { color: var(--text); }
.breakdown-row.total {
  padding-top: 10px;
  border-top: 1px dashed var(--border);
  color: var(--text);
  font-weight: 750;
}
.side-actions {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}
.side-actions .btn,
.side-actions .btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  min-height: 48px;
  border-radius: 10px;
  font-weight: 750;
}
.side-actions .btn-secondary {
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}
.micro-note {
  margin-top: 14px;
  color: var(--muted-2);
  font-size: .82rem;
}
.reveal-price {
  display: block !important;
  margin-top: 22px;
}
@media (max-width: 980px) {
  .estimator-shell { grid-template-columns: 1fr; }
  .estimator-side { position: static; }
}
@media (max-width: 720px) {
  .form-grid-2,
  .option-grid,
  .side-stats { grid-template-columns: 1fr; }
  .estimator-form { padding: 22px; }
  .estimator-side { padding: 20px; }
}